holzer



` C. F. HOLZER.

Gas Regulator.

TED gTAWENT @FFME CHAS. F. HOLZER, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNOR TO WM. B. SMITH AND WM. BROMWELL, OF SAME PLAGE.

GAS-REGULATOR.

Specification of Letters Patent No. 21,048, dated July 27, 1858.

T 0 all whom t may concern.'

Be it known that I, Giras. F. HoLzER, of Philadelphia, county ofPhiladelphia, in the State of Pennsylvania, have invented certain newand useful Improvements in Gras-Regulators; and I do hereby declare thatthe following is a full and exact description thereof, reference beinghad to the accom panying drawings and to the letters of reference markedthereon.

This invention relates to that description of gas regulator which hasthe regulating valve attached to a cup which is inverted in a basin ofmercury and which is subjected to the pressure of the gas in onedirection and to that of a spring in the opposite direction in such amanner as causes the area of opening1 of the valve to be inversely asthe pressure of the gas.

It consists in certain arrangements of the working parts and of thepassages as hereinafter described, by which the spring and the guide forthe valve and cup are protected from the injurious eiiects of exposureto the gas, and provision is made for t-he return through the inletopening of the regulator of water, tar, or other foreign substance thatmay be condensed from `the gas, thus obviating the necessity of a siphonor waste receptacle attached to the regulator.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A, is the inlet chamber to which the inlet pipe admitting the gas at thestreet press sure is connected at a, said chamber being immediatelybelow the outlet chamber C, from which the gas escapes at the regulatedpressure by a pipe connected at 29. The upper part of the inlet chamberis surrounded by an annular basin D to contain the mercury, in whichfloats the inverted cup B, which forms the cover of the principalportion of the outlet chamber.

E, is the regulating valve, whose seat is in the partition CZ, betweenthe inlet and outlet chambers, A and C, said valve being attached by ahollow stem e, to the inverted cup B, which is above it, and closing orcontracting the passage between it and its seat by an upward movement.

F is a cover screwing on the top of the mercury basin D, and inclosingthe inverted cup B, said cover having an internally screwed socket G,extending upward from its center, into which socket screws the head f1of a rod j, which passes through the center of the hollow stem e, andserves as a guide to the inverted cup and regulating valve.

g, is a spiral spring contained in the hollow stem e and surrounding theguise rod f, said spring being attached at its upper end to the invertedcup, and having its lower end contracted to give it a bearing under ashoulder Q, on the rod f, and exerting a tendency to pull down the cupand open the regulating valve, in opposition to the pressure of theincoming gas, which pressing on the under side of the cup tends to raiseit and close the regulating valve.

The gas flows in the direction of the arrows shown in the drawing, andaccording as there is a tendency to increased or diminished pressure inthe outlet chamber C, owing in the first case to an increased streetpressure or the reduction in the number of burners used, or in theopening of the same, and in the latter case to a diminished streetpressure or an increase of the number of burners used, or in the degreeof opening of the same, the cup is more or less elevated and the openingof the valve contracted 0r enlarged to equalize the pressure. Thepressure may be increased or diminished at pleasure by screwing the headf1 of the rod j", lower down or higher up the socket G, to increase ordiminish the tension of the spring g. This operation, however, is notsubstantially different from that of other gas regulators; but by thearrangement of the parts some important advantages are gained, whichwill now be explained.

It will be seen by reference to the drawing that the cup being placedabove the valve and forming a cover to the outlet chamber, and thespring being placed within the hollow stem by which the valve isattached below the inverted cup, and the guide rod entering the stemthrough the top of the cup, both the spring and the guide rod areentirely out of contact with the gas and hence not liable to be corrodedas they speedily are in other regulators, in which the springs shortlybecome useless. The

arrangement of the cup, the valve and the inlet and outlet chambers, itwill also be obvious on reference to the drawings, admits of a freereturn of all liquid matter condensed from the gas, through the inletpipe,

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as there is no place within the regulator where any liquid can lodge,and hence the necessity of a siphon or waste receiver to draw 0E suchfluids periodically is obviated.

I do not claim the combination of an inlet and outlet chamber, a valve,an inverted cup, and a spring, as I am aware that such combination isused in most gas regulators; but

Having1 fully described the construction and operation of my improvementwhat I claim as new and desire to secure by Letters Patent is Thepeculiar arrangement as described of the inlet and outlet chambers, thevalve, the

inverted cup, the spring and the guide pin; whereby the spring and theguide are effectually protected from Contact with the gas, and provisionis made for the return of all liquid matter through the inlet pipe, asherein fully set forth.

In testimony whereof I have hereunto set my hand and seal thisnineteenth day of April, 1858.

CHAS. F. I-IOLZER. [Ls] Witnesses:

WILLIAM B. SMITH, THOMAS Y. MIDLEN.

